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Code Issues Releases Activity

Fix edge emulation for bicubic MC in B frames

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Originally committed as revision 6234 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2006-09-12 04:16:28 +00:00
parent f9942ba94b
commit b116cc7f95
1 changed files with 5 additions and 3 deletions
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8
libavcodec/vc1.c
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@ -2028,7 +2028,8 @@ static void vc1_interp_mc(VC1Context *v)
|| (unsigned)src_y > s->v_edge_pos - (my&3) - 16){ || (unsigned)src_y > s->v_edge_pos - (my&3) - 16){
uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize; uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17, 17, srcY -= s->mspel * (1 + s->linesize);
ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos); src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
srcY = s->edge_emu_buffer; srcY = s->edge_emu_buffer;
ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1, ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1,
@ -2043,8 +2044,8 @@ static void vc1_interp_mc(VC1Context *v)
uint8_t *src, *src2; uint8_t *src, *src2;
src = srcY; src = srcY;
for(j = 0; j < 17; j++) { for(j = 0; j < 17 + s->mspel*2; j++) {
for(i = 0; i < 17; i++) src[i] = ((src[i] - 128) >> 1) + 128; for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
src += s->linesize; src += s->linesize;
} }
src = srcU; src2 = srcV; src = srcU; src2 = srcV;
@ -2057,6 +2058,7 @@ static void vc1_interp_mc(VC1Context *v)
src2 += s->uvlinesize; src2 += s->uvlinesize;
} }
} }
srcY += s->mspel * (1 + s->linesize);
} }
if(v->fastuvmc) { if(v->fastuvmc) {